Know Your Environment. Protect Your Health.

Monochlorobenzene (chlorobenzene)

Town of Poolesville

Monochlorobenzene is used as a solvent for pesticides, a degreasing agent and an intermediate for manufacturing other chemicals. It causes liver and kidney damage in studies of laboratory animals.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND30ND
2020N/A00N/A
2021ND80ND
2022N/A00N/A
2023ND20ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 70 ppb

The EWG Health Guideline of 70 ppb for monochlorobenzene was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.

EPA Maximum Contaminant
Level (MCL): 100 ppb

The legal limit for monochlorobenzene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1960s.

ppb = parts per billion

All test results

Date Lab ID Result
2019-07-02E20000017001ND
2019-07-02E20000017004ND
2019-07-02E20000017006ND
2021-01-21E21001857001ND
2021-01-21E21001857004ND
2021-04-06E21002753001ND
2021-04-06E21002753004ND
2021-07-13E22000119001ND
2021-08-05E22000416001ND
2021-08-05E22000416004ND
2021-10-05E2200028701ND
2023-04-18E2300236508ND
2023-04-18E2300236520ND